Comment 48 for bug 1558331

W: http://ppa.launchpad.net/diesch/testing/ubuntu/dists/vivid/InRelease: Signature by key E53B0E36210D2EDBFA94E8AB5AF549300FEB6DD9 uses weak digest algorithm (SHA1)
W: http://repository.spotify.com/dists/stable/InRelease: Signature by key BBEBDCB318AD50EC6865090613B00F1FD2C19886 uses weak digest algorithm (SHA1)
W: http://ppa.launchpad.net/libreoffice/libreoffice-5-1/ubuntu/dists/xenial/InRelease: Signature by key 36E81C9267FD1383FCC4490983FBA1751378B444 uses weak digest algorithm (SHA1)
W: http://dl.google.com/linux/chrome/deb/dists/stable/Release.gpg: Signature by key 4CCA1EAF950CEE4AB83976DCA040830F7FAC5991 uses weak digest algorithm (SHA1)
W: http://ppa.launchpad.net/noobslab/icons2/ubuntu/dists/vivid/InRelease: Signature by key 4FA44A478284A18C1BA4A9CAD530E028F59EAE4D uses weak digest algorithm (SHA1)
W: http://apt.insynchq.com/ubuntu/dists/xenial/InRelease: Signature by key 3B158123A580D31A9E86248106BBDC2602DFE7E7 uses weak digest algorithm (SHA1)
W: http://ppa.launchpad.net/peterlevi/ppa/ubuntu/dists/xenial/InRelease: Signature by key 876E675CB1AABA3497F27BA6C45A53C1A546BE4F uses weak digest algorithm (SHA1)
W: https://deb.opera.com/opera-beta/dists/stable/InRelease: Signature by key 419D0ACF314E8E993F7F92E563F7D4AFF6D61D45 uses weak digest algorithm (SHA1)
W: http://mega.nz/linux/MEGAsync/xUbuntu_15.04/./Release.gpg: Signature by key BF8B66E01192CBA2E72201294B4E7A9523ACD201 uses weak digest algorithm (SHA1)